hphp/runtime/base/string-holder.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #include "hphp/runtime/base/string-holder.h"
  18
  19 namespace HPHP {
  20
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 StringHolder::StringHolder(const char* data, uint32_t len, bool free)
  24   : m_data(data), m_len(len),
  25     m_type(free ? Type::StrFree : Type::StrNoFree),
  26     m_output(nullptr)
  27 {}
  28
  29 StringHolder::StringHolder(StringHolder&& o)
  30   : m_len(o.m_len), m_type(o.m_type), m_output(std::move(o.m_output))
  31 {
  32   m_data = o.m_data;
  33   o.m_data = nullptr;
  34 }
  35
  36 StringHolder::~StringHolder() {
  37   if (m_type == Type::StrFree && m_data) free((void *)m_data);
  38 }
  39
  40 StringHolder& StringHolder::operator=(StringHolder&& o) {
  41   m_type = o.m_type;
  42   m_output = std::move(o.m_output);
  43   m_len = o.m_len;
  44   m_data = o.m_data;
  45   o.m_data = nullptr;
  46   return *this;
  47 }
  48
  49 void StringHolder::set(folly::IOBuf *output) {
  50   m_output = std::unique_ptr<folly::IOBuf>(output);
  51   m_type = Type::IOBuf;
  52 }
  53
  54 uint32_t StringHolder::size() const {
  55   if (m_output) return m_output->length();
  56   return m_len;
  57 }
  58
  59 const char* StringHolder::data() const {
  60   if (m_output) {
  61     return reinterpret_cast<const char*>(m_output->data());
  62   }
  63   return m_data;
  64 }
  65
  66 ///////////////////////////////////////////////////////////////////////////////
  67
  68 }